| 发明名称 |
CONDUCTIVE COOLING-TYPE PERSISTENT CURRENT SWITCH, MRI APPARATUS AND NMR APPARATUS |
| 摘要 |
A technical problem is to turn a persistent current switch on and off at high speed with less heat input. The invention relates to a conductive cooling-type persistent current switch, including: a superconductive wire 1 through which a current is passed; a cooling stage 9 which cools the superconductive wire; and a heater 8 which heats the superconductive wire, wherein the superconductive wire is placed between faces which are each formed by the cooling stage and the heater, a core of the superconductive wire is magnesium diboride 6, and a base material 5 placed around an outer periphery of the core is a material having a resistivity of 10 μΩcm or more at 40 K. |
| 申请公布号 |
US2015228391(A1) |
申请公布日期 |
2015.08.13 |
| 申请号 |
US201314421470 |
申请日期 |
2013.07.12 |
| 申请人 |
Hitachi, Ltd., |
发明人 |
Kodama Motomune;Tanaka Kazuhide;Ichiki Yota |
| 分类号 |
H01F6/06;G01R33/34;H01F6/04;G01R33/36 |
主分类号 |
H01F6/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A conductive cooling-type persistent current switch, comprising:
a superconductive wire through which a current is passed; a cooling stage which cools the superconductive wire; and a heater which heats the superconductive wire, wherein the superconductive wire is placed between faces which are each formed by the cooling stage and the heater, a core of the superconductive wire is magnesium diboride, and a base material placed around an outer periphery of the core is a material having a resistivity of 10 μΩcm or more at 40 K. |
| 地址 |
Tokyo JP |
